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I'm running a Ubuntu server in VMWare. And I would like to forward the X11 from the Ubuntu guest to the Mac host.

I've installed XQuartz 2.7.9 (xorg-server 1.17.4) on the Mac host.

And SSH forwarding on the Ubuntu is enabled.

Then I tried the following in iTerm:

%> echo $DISPLAY
/private/tmp/com.apple.launchd.mjxVyILVrR/org.macosforge.xquartz:0
%> ssh -X root@xxxx
# echo $DISPLAY

# gnome-terminal
Unable to init server: Could not connect: Connection refused
Failed to parse arguments: Cannot open display

$DISPLAY is empty, and X11 forwarding is not working.

Any ideas?

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  • Post verbose log from the ssh -X -vvv root@xxxx to see what is going on there. – Jakuje Sep 23 '16 at 6:49
  • Make sure you have xauth installed at both sides, try adding the -Y flag to the ssh command – Tim Fletcher Sep 23 '16 at 7:54
  • @TimFletcher /usr/bin/xauth: file /root/.Xauthority does not exist, weird. It actually exists with permission 0600 – daisy Sep 23 '16 at 10:12
  • Could there be restrictions on xforwarding for root? – Tim Fletcher Sep 23 '16 at 10:35
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open /etc/ssh/sshd_config in remote system and set X11Forwarding yes . Then restart ssh service and try again

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  • It's already enabled .. – daisy Sep 23 '16 at 5:49
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Try running ssh -Y root@xxxx in xterm inside XQuartz instead of from iTerm. Does that work?

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